This manuscript proposes a hybrid approach for non-isolated quasi Z-source (QZS)-novel cascaded multilevel inverter (NIQZS-NMLI)-based grid-connected photovoltaic (PV) system. The proposed hybrid approach is the combined execution of both the color harmony algorithm (CHA) and woodpecker-mating algorithm (WMA), and hence it is called CHA-WMA method. Initially, the NIQZS-NMLI design is developed to gain the optimal control signal using the proposed controller. The NIQZS-NMLI is developed with the reduced count of switches, diodes, and sources. The major objective of the proposed method is “to satisfy the load power requirement and to maintain the power regulation or maximum energy conversion of the wind and solar subsystems.” The proposed method strictly prohibits the variations present in the output voltage of the NIQZS-NMLI. Here, the CHA is employed to evaluate the optimal gain parameters in light of the source currents variety from the normal value, also it is useful for generating the optimum control signals dataset in the offline way. In the online way, the WMA predicts the most optimal control signals of the NIQZS-NMLI in light of the satisfied dataset. The resultant control signals have been utilized for controlling the insulated gate bi-polar switches (IGBT) of NIQZS-NMLI. The proposed method is implemented in MATLAB/Simulink site and the performance is analyzed with existing methods. Moreover, the PV performance is analyzed under three test cases. The PV efficiency of the proposed method for all cases is 89.3975%, 90.2653%, and 97.8095%. Overall, the comparison outcomes demonstrate that the proposed method is more efficient than the other existing methods.

中文翻译：

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一种用于非隔离准Z源新型多电平逆变器并网光伏系统的高效CHA-WMA控制策略

本手稿提出了一种用于非隔离式准 Z 源 (QZS)-新型级联多电平逆变器 (NIQZS-NMLI) 的并网光伏 (PV) 系统的混合方法。所提出的混合方法是色彩和谐算法 (CHA) 和啄木鸟交配算法 (WMA) 的组合执行，因此称为 CHA-WMA 方法。最初，开发 NIQZS-NMLI 设计以使用所提出的控制器获得最佳控制信号。NIQZS-NMLI 的开发减少了开关、二极管和源的数量。所提出方法的主要目标是“满足负载功率要求并保持风能和太阳能子系统的功率调节或最大能量转换”。所提出的方法严格禁止 NIQZS-NMLI 的输出电压中存在的变化。这里，CHA 用于根据源电流与正常值的变化来评估最佳增益参数，也可用于以离线方式生成最佳控制信号数据集。在在线方式中，WMA 根据满意的数据集预测 NIQZS-NMLI 的最佳控制信号。由此产生的控制信号已用于控制 NIQZS-NMLI 的绝缘栅双极开关 (IGBT)。所提出的方法在MATLAB/Simulink 站点上实现，并使用现有方法进行性能分析。此外，在三个测试用例下分析了光伏性能。所提出的方法在所有情况下的 PV 效率为 89.3975%、90.2653% 和 97.8095%。总体而言，比较结果表明所提出的方法比其他现有方法更有效。